CVE-2018-0180Cisco IOS Software Denial-of-Service Vulnerability

Multiple vulnerabilities in the Login Enhancements (Login Block) feature of Cisco IOS Software could allow an unauthenticated, remote attacker to trigger a reload of an affected system, resulting in a denial of service (DoS) condition. These vulnerabilities affect Cisco devices that are running Cisco IOS Software Release 15.4(2)T, 15.4(3)M, or 15.4(2)CG and later. Cisco Bug IDs: CSCuy32360, CSCuz60599.

6.8 MEDIUMEPSS 4.93%⚡ Known Exploited (CISA KEV)NVD: Analyzed

Last updated: 2026-06-17 01:30 UTC

OverviewCVSS details

6.8MEDIUMCVSS 3.1

Score source: CISA-ADP
NVD status: Analyzed
Published: Mar 28, 2018
Assigner: cisco

Affected

Cisco IOS

Versions: Cisco IOS

Exploitation

Public exploit: None listed
CISA KEV: Listed · Mar 3, 2022
KEV due date: Mar 17, 2022
Ransomware use: Unknown
SSVC: Exploitation active · Automatable no · Impact partial

EPSS · FIRST, scored Nov 7

4.93%chance of exploitation in 30 days

Higher than 92.19% of CVEs

CVSS 3.1 · CISA-ADP

6.8Medium

CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:N/I:N/A:H

Attack vector: Network
Attack complexity: High
Privileges required: None
User interaction: None
Scope: Changed
Confidentiality impact: None
Integrity impact: None
Availability impact: High

CVSS 3.1 · NVD

5.9Medium

CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H

Attack vector: Network
Attack complexity: High
Privileges required: None
User interaction: None
Scope: Unchanged
Confidentiality impact: None
Integrity impact: None
Availability impact: High

CVSS 2.0 · NVD

7.1High

AV:N/AC:M/Au:N/C:N/I:N/A:C

Attack vector: Network
Attack complexity: Medium
Authentication: None
Confidentiality impact: None
Integrity impact: None
Availability impact: Complete

NVD status: Analyzed

Overview Affected Products References

NVD CVE.org

Overview

Severity

Score	Severity	Version	Vector String
6.8	MEDIUM	3.1CISA-ADP	CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:N/I:N/A:H
5.9	MEDIUM	3.1NVD	CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H
7.1	HIGH	2.0NVD	AV:N/AC:M/Au:N/C:N/I:N/A:C

CISA required action

⚡ Known exploited · remediation due Mar 17, 2022

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Details

CVE ID: CVE-2018-0180
Status: Analyzed
Assigner (CNA): cisco
Published: Mar 28, 2018
Last modified: 2026-06-17 01:30 UTC
Weaknesses: CWE-399

Sources

Refreshed hourly from the sources above. Last fetched 2026-11-08 12:17 UTC.